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BH-IF钢超快速加热退火工艺

DOI: 10.3969/j.issn.1005-3026.2014.10.011, PP. 1412-1416

Keywords: BH-IF钢,加热速率,塑性应变比,再结晶织构,XRD

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Abstract:

研究了不同退火条件对BH-IF钢组织和织构演变及性能的影响.结果表明:随着加热速率的增加,BH-IF钢晶粒得到细化,但并不明显,强度和延伸率提高,再结晶织构仍为典型的管状γ织构;在超快速加热速率条件下,XRD织构分析显示BH-IF钢γ取向纤维织构组分及强度差异缩小,各组分更趋均匀.随保温时间增加,γ取向纤维织构强度增加,因而由其决定的r值(塑性应变比)增加.在超快速加热速率条件下,试样平行于轧向的r0降低,而垂直于轧向的r90增加,其均值rm无明显变化.

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